<template>
  <section>
    <!--工具条-->
    <el-col :span="24" class="toolbar" style="padding-bottom: 0px;">
      <el-form :inline="true" >
        <el-form-item>
          <el-input v-model="keywork" placeholder="姓名"></el-input>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="keyworkQuery">查询</el-button>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="handleAdd">新增</el-button>
        </el-form-item>
      </el-form>
    </el-col>

    <!--列表-->
    <el-table :data="departments" highlight-current-row v-loading="listLoading" @selection-change="selsChange" style="width: 100%;">
      <el-table-column type="selection" width="55">
      </el-table-column>
      <el-table-column type="index" width="60">
      </el-table-column>
      <el-table-column prop="name" label="姓名" width="120">
      </el-table-column>
      <el-table-column prop="sn" label="部门编号" width="100"  >
      </el-table-column>
      <el-table-column prop="dirPath" label="部门路径" width="100" >
      </el-table-column>
      <el-table-column prop="state" label="状态" width="120" sortable>
        <template scope="scope">
          <span style="color: #11b95c" v-if="scope.row.state">启用</span>
          <span style="color: red" v-else>禁用</span>
        </template>
      </el-table-column>
      <el-table-column prop="employee.username" label="部门经理" width="180" >
      </el-table-column>
      <el-table-column  label="上级部门" width="180" >
        <template scope="scope">
          <span style="color: pink" v-if="scope.row.parent">{{scope.row.parent.name}}</span>
          <span style="color: gray" v-else>无上级部门</span>
        </template>
      </el-table-column>
      <el-table-column label="操作" width="150">
        <template scope="scope">
          <el-button size="small" @click="handleSave(scope.$index, scope.row)">编辑</el-button>
          <el-button type="danger" size="small" @click="handleDel(scope.$index, scope.row)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!--工具条-->
    <el-col :span="24" class="toolbar">
      <el-button type="danger" @click="batchRemove" :disabled="this.sels.length===0">批量删除</el-button>
      <el-pagination layout="prev, pager, next"
                     @current-change="handleCurrentChange"
                     :page-size="pageSize"
                     :total= "totals"
                     :current-page="currentPage"
                     style="float:right;">
      </el-pagination>
    </el-col>

    <!--编辑界面-->
    <el-dialog :title="title" :visible.sync="saveFormVisible" :close-on-click-modal="false">
      <el-form :model="saveForm" label-width="80px" :rules="saveFormRules" ref="saveForm">

        <el-form-item label="姓名" prop="name">
          <el-input v-model="saveForm.name" auto-complete="off"></el-input>
        </el-form-item>

        <el-form-item label="部门编号" prop="sn">
          <el-input v-model="saveForm.sn" auto-complete="off"></el-input>
        </el-form-item>

        <el-form-item label="状态">
          <el-radio-group v-model="saveForm.state">
            <el-radio class="radio" :label="1">启用</el-radio>
            <el-radio class="radio" :label="0">禁用</el-radio>
          </el-radio-group>
        </el-form-item>

        <!--
        下拉框的显示：
          v-for="item in managers" + 2个span
        回显机制：
          1.先根据v-model="saveForm.manager_id"中的manager_id从managers中找到回显哪一个对象
          2.但是对象中有很多属性，再通过:label="item.username" - 回显对象的username
        传值机制：
          1.当你选中某一个部门经理的时候，:value="item.id"  它会把选中对象的id
          2.赋值给v-model="saveForm.manager_id"中的manager_id
      -->
        <el-form-item label="部门经理" prop="manager_id">
          <el-select v-model="saveForm.manager_id" placeholder="请选择">
            <el-option
                v-for="item in managers"
                :label="item.username"
                :value="item.id">
              <span style="float: left">{{ item.username }}</span>
              <span style="float: right; color: #8492a6; font-size: 13px">{{ item.phone }}</span>
            </el-option>
          </el-select>
        </el-form-item>

        <el-form-item label="上级部门" prop="parent_id">
          <el-cascader v-model="saveForm.parent_id"
                       :options="deptTree"
                       :props="{ checkStrictly: true,
                        label: 'name', // 级联框显示那个属性的值
                        value: 'id'    // 回显时需要,回传值的时候也需要
          }"
                       clearable></el-cascader>
        </el-form-item>


      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click.native="saveFormVisible = false">取消</el-button>
        <el-button type="primary" @click.native="saveSubmit" :loading="saveLoading">提交</el-button>
      </div>
    </el-dialog>


  </section>
</template>

<script>


export default {
  data() {
    return {
      managers:[],
      departments: [],
      totals: 0,
      currentPage:1,
      pageSize:5,
      listLoading: false,
      //高级查询查询参数
      keywork:'',
      //批量删除
      sels: [],
      deptTree:[],

      //添加与修改
      title:'',
      saveFormVisible: false,//控制对话框是否显示 - 默认不显示
      saveLoading: false,    //加载框

      saveFormRules: {
        //表单项中的prop属性
        name: [
          { required: true, message: '请输入姓名', trigger: 'blur' }
        ],
        sn: [
          { required: true, message: '请输入部门编号', trigger: 'blur' }
        ],
      },
      //编辑界面数据
      saveForm: {
        id: null,
        name: '',
        sn: '',
        state: 1,
        manager_id: null,
        parent_id: null
      },



    }
  },
  methods: {
    //1.分页查询
    handleCurrentChange(val){
      this.currentPage=val;
      this.getDepartments();
    },
    // 2.前端：点击查询发送异步请求，传高级查询的参数和分页参数【高级查询的结果也要分页】
    keyworkQuery(){
      //防止高级查询时查询出为空的现象【当前是第5页，但是高级查询的结果没有5页】
      this.currentPage=1;

      this.getDepartments();


    },

    //3. //分页的实现
    getDepartments(){
      //组装参数
      let para= {
        currentPage:this.currentPage,
        pageSize:this.pageSize,
        keywork:this.keywork,
      };
      this.listLoading=true
      this.$http.post("/department",para).then(res=>{
        this.totals= res.data.totals;
        console.log(res.data.totals)
        this.departments =res.data.data;
        this.listLoading=false;
      }).catch(res=>{

        this.$message.error("网络繁忙，请检查网络")
      })


    },


    //4.删除
    handleDel: function (index, row) {
      this.$confirm('确认删除该记录吗?', '提示', {
        type: 'warning'
      }).then(() => {
        this.listLoading = true;
        //NProgress.start();
        this.$http.delete(/department/+row.id).then(res=>{
          this.listLoading=false;
          //通过后端反馈数据判断是否删除成功
          if(res.data.success){
            this.$message.success("删除成功")
            var totalPage = Math.ceil(this.totals/this.pageSize);

            if(this.currentPage==totalPage && (this.totals-1)%this.pageSize==0 && this.currentPage!=1){
              this.currentPage=this.currentPage-1;
            }
            //成功调分页查询的方法显示数据
            this.getDepartments();

          }else {
            this.$message.error("删除失败【500】")
          }

        }).catch(res=>{
          //没有连接到服务器就会走这里，请求地址不对也会走这里
          this.$message.error("系统繁忙，请稍后重试!!!")

        })
      }).catch(() => {

      });
    },
    //5.批量删除
    selsChange:function (sels){

      this.sels=sels;
    },
    //6.批量删除
    batchRemove: function () {
      var ids = this.sels.map(item => item.id);
      this.$confirm('确认删除选中记录吗？', '提示', {
        type: 'warning'
      }).then(() => {
        this.listLoading = true;
        this.$http.patch("/department",ids).then(res=>{
          this.listLoading = false;
          if(res.data.success){
            this.$message.success("删除成功");
            this.currentPage=1;
            this.getDepartments();

          }else {

            this.$message.error("删除失败【500】")
          }

        }).catch(res=>{
          //没有连接到服务器就会走这里，请求地址不对也会走这里
          this.$message.error("系统繁忙，请稍后重试!!!")

        })
      }).catch(() => {

      });
    },

    //7.修改与添加

    //显示编辑界面
    handleSave: function (index, row) {
      console.log(row)
      this.title="修改";
      this.saveFormVisible = true;
      this.saveForm = Object.assign({}, row);
      this.getManagers();
      this.getDeptTree()
    },
    //8.显示新增界面
    handleAdd: function () {
      this.title="添加";

      this.saveFormVisible = true;
      this.saveForm = {
        name: '',
        sn: '',
        state: 1,
        manager_id: null,
        parent_id: null,

      };
      this.getManagers();
      this.getDeptTree()
    },
    //9点击提交数据
    saveSubmit: function () {
      this.$refs.saveForm.validate((valid) => {
        if (valid) {
          this.$confirm('确认提交吗？', '提示', {}).then(() => {
            this.saveLoading = true;
            //NProgress.start();
            let para = Object.assign({}, this.saveForm);
            // //前端无限级树的处理：null，[],[2],[2,5],2
            if(para.parent_id == null || para.parent_id.length==0){
              para.parent_id == null;
            }else if(para.parent_id.length){//有值，没有报错，数组[2],[2,5]

              para.parent_id=para.parent_id[para.parent_id.length-1]
            }
            //发送请求
            this.$http.put("/department",para).then(res=>{

              //关闭加载框
              this.saveLoading = false;
              //关闭对话框
              this.saveFormVisible=false;
              if(res.data.success){
                this.$message.success("操作成功")
                this.getDepartments();
              }else {
                this.$message.error("操作失败")
              }
            }).catch(res=>{
              this.$message.error("系统异常")
            })
          });
        }
      });
    },
    //10.下拉框实现
    //获取所有经理
    getManagers(){
      this.$http.get("/employee").then(res=>{
        //将所有的员工赋值给managers
        this.managers=res.data
      })
    },
    //11.获取所有的部门
    getDeptTree(){
      this.$http.get("/department/deptTree").then(res=>{
        this.deptTree= res.data;

      })
    }

  },
  mounted() {
    this.getDepartments();

  }
}

</script>

<style scoped>

</style>